Category: isoquinoline

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1125-80-0,3-Methylisoquinoline,as a common compound, the synthetic route is as follows.

Preparation 1-9 3-Methyl-1,2,3,4-Tetrahydroisoquinoline 3.0 g of 3-methylisoquinoline(21 mM) and 50 ml of methanol were mixed and 0.84 g of platinum oxide was added thereto. The mixture was subjected to hydrogenation at 40 psi and filtered. The filtrate was concentrated under a reduced pressure, to give 3.3 g of the title compound.

As the paragraph descriping shows that 1125-80-0 is playing an increasingly important role.

Reference£º
Patent; Yuhan Corporation; US5686458; (1997); A;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.486-73-7,Isoquinoline-1-carboxylic acid,as a common compound, the synthetic route is as follows.

The crude residue obtained from the procedure herein above is combined with 1-isoquinolinecarboxylic acid (2.6 g, 15.0 mmol), HOBt (2.68 g, 19.8 [MMOL),] and EDCI (3.8 g, 19.8 [MMOL)] in DMF (20 mL). The solution is stirred for 3 hours at room temperature then diluted with EtOAc, washed with saturated [NAHCO3,] saturated NaCI, and dried (Na2SO4). The solvent is removed in vacuo and the residue obtained purified by HPLC to afford 1.7 g (40% yield) of the desired product NMR [(CDCI3)] 8 9.49-9. 46 (d, J=7.8 Hz, [1H),] 9.20-9. 18 (d, J=6.9 Hz, 1H), 8.52-8. 50 (d, J=5.5 Hz, [1H),] 7.86-7. 78 (m, 2H), 7.72-7. 63 (m, 2H), 5.79 (bs, [1H),] 5.55-5. 47 (m, [1H),] 4.76-4. 69 (d, d, [J=17.] 3,2. 3 Hz, [1H),] 4.45-4. 40 (d, [J=17.] 4 Hz, 1H), 4.25-4. 19 (d, [J=17.] 4 Hz, [1H),] 4.15-3. 98 (m, 3H), 3.73 (s, 3H), 3.65-3. 59 (d, [J=17.] 4 Hz, [1H),] 2.97-2. 90 (d, d, [J=18.] 2,3. 9 Hz, 1H), 2.48-2. 29 (m, 3H) [;’3C (CDCI3) S] 172.7, 170.5, 165.9, 148.2, 141.0, 137.7, 136.3, 130.7, 128.9, [127?7,] 127.2, 126.4, 124.7, 67.5, 60.8, 52.8, 50.3, 49.3, [48.] 1,32. 5,21. 4,14. 5; MS 384 (M+H) [+.]

The synthetic route of 486-73-7 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; THE PROCTER & GAMBLE COMPANY; WO2003/103677; (2003); A1;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.22246-12-4,6-Methoxy-3,4-dihydroisoquinolin-1(2H)-one,as a common compound, the synthetic route is as follows.

To a solution of 6-methoxy-1-oxo-1,2,3,4-tetrahydroisoquinoline (31.3 g, 177 mmol) in CH2 Cl2 (300 mL) at -78 is added BBr3 (33.4 mL, 353 mmol). The reaction mixture is allowed to come to ambient temperature and is stirred for 12 hours. After this time the reaction mixture is cooled to 0 and is subsequently neutralized with 5N NaOH (150 mL) solution and saturated NaHCO3 solution. The resulting precipitate is extracted with hot acetone (4*500 mL) and the combined organics are concentrated in vacuo to give 6-hydroxy-1-oxo-1,2,3,4-tetrahydroisoquinoline.

The synthetic route of 22246-12-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Ciba-Geigy Corporation; US5334600; (1994); A;; ; Patent; Ciba-Geigy Corporation; US5260316; (1993); A;,
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147497-32-3, 6-Bromo-3,4-dihydroisoquinolin-1(2H)-one is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

EXAMPLE11; Step 11A;: A mixture of 6-bromo-3,4-dihydro-2H-isoquinolin-1-one (250 mg, 1.11 mmol), 4-trifluoromethyl-phenyl-boronic acid (251 mg, 1.33 mmol), 2 M aqueous sodium carbonate (1.10 mL), toluene (6 mL), ethanol (2 mL) and water (1 mL) was purged with nitrogen for 5 minutes. Palladium-tetrakis (triphenylphosphine) (64 mg, 0.055 mmol) was added and the mixture was heated with stirring at 80 C in a sealed pressure vessel for 19 h. Water (1 mL) was added and the reaction mixture was extracted with ethyl acetate (3 x 5 mL). The combined organic fractions were rinsed with water (10 mL) and concentrated in vacuo to give 475 mg of a light orange solid. Chromatography (silica gel 4: 96: 0.5, methanol: CH2Cl2: NH40H) afforded 189 mg (59 %) of lla as an off-white solid. LC-MS 292.0 (MH+).

147497-32-3 6-Bromo-3,4-dihydroisoquinolin-1(2H)-one 21865450, aisoquinoline compound, is more and more widely used in various.

Reference£º
Patent; NEUROCRINE BIOSCIENCES, INC.; WO2005/103039; (2005); A1;,
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Isoquinoline | C9H7N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.22246-12-4,6-Methoxy-3,4-dihydroisoquinolin-1(2H)-one,as a common compound, the synthetic route is as follows.

Example 5 (E)-methyl 3 -(4-(6-hydroxy-2-(4-isopropoxyphenyl)-l -methyl- 1.2.3.4-tetrahvdroisoquinolin-l- vD-phenvDacrylate 6-methoxy-3,4-dihydroisoquinolin-l(2H)-one (0.21 g, 1.185 mmol) was dissolved dichloromethane (5.93 ml). A I M solution of BBr3 (5.93 ml, 5.93 mmol) in heptanes was added dropwise and the reaction stirred for 30 min at rt. LC MS indicates the reaction was 50% complete, additional 1 M BBr3 in heptanes (5.93 ml, 5.93 mmol) was added. The reaction stirred for 1 h at rt. The reaction was then quenched with saturated sodium bicarbonate. The reaction was extracted with DCM but DCM extract did not contain any product. The product precipitated out on the reaction flask and was collected. The crude product was used without purification in the next reaction. NMR (400 MHz, DMSO-d6) delta 7.67 (d, J = 8.4 Hz, 1H), 6.69 (dd, J = 8.4, 2.4 Hz, 1H), 6.62 (d, J = 2.4 Hz, 1H), 3.31 (t, J = 6.1 Hz, 2H), 2.79 (t, J = 6.6 Hz, 2H). LC/MS (m/z, MH+): 164.1.

As the paragraph descriping shows that 22246-12-4 is playing an increasingly important role.

Reference£º
Patent; NOVARTIS AG; BURKS, Heather Elizabeth; KARKI, Rajeshri Ganesh; KIRBY, Christina Ann; NUNEZ, Jill; PEUKERT, Stefan; SPRINGER, Clayton; SUN, Yingchuan; THOMSEN, Noel Marie-france; WO2015/92634; (2015); A1;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1125-80-0,3-Methylisoquinoline,as a common compound, the synthetic route is as follows.

The mixture of 3-methylisoquinoline (782 mg, 5.46mmol), N-bromosuccinimide (1.069 g, 6.01 mmol) and azobisisobutyronitrile (134 mg, 0.819mmol) in CCl4 (100 mL) were refluxed for 1 h. Ten percent of Na2S2O3 (20 mL) was then addedto quench the reaction. The mixture was diluted with DCM (20 mL). The organic layer wasseparated and washed with brine, dried over Na2SO4 and concentrated. To the residue was added12DCM, the precipitate was filtered off and the filtrate was purified with silica gel (EA/PE = 1/20)to give 387 mg white solid, in 32% yield. 1H NMR (400 MHz, CDCl3) 9.25 (s, 1H), 7.98 (d, J= 8.04 Hz, 1H), 7.82 (d, J = 8.06 Hz, 1H), 7.77 (s, 1H), 7.71 (m, 1H), 7.62 (m, 1H), 4.75 (s, 2H);13C NMR (100 MHz, CDCl3) delta 152.92, 150.10, 136.26, 130.84, 127.94, 127.83, 127.65, 126.67,119.77, 34.63. IR (Diamond, cm-1) numax 3058.1, 1627.5, 1218.2, 956.0, 893.9, 753.4, 733.1. mp 90.5 – 92 C.

1125-80-0 3-Methylisoquinoline 14306, aisoquinoline compound, is more and more widely used in various.

Reference£º
Article; Yuan, Yunyun; Elbegdorj, Orgil; Beletskaya, Irina O.; Selley, Dana E.; Zhang, Yan; Bioorganic and Medicinal Chemistry Letters; vol. 23; 18; (2013); p. 5045 – 5048;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

486-73-7, Isoquinoline-1-carboxylic acid is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: To a solution of carboxylic acid (1.0 mmol) in anhydrous THF (20 mL) were added (2S,3R)-2-amino-3-hydroxy-N-alkylbutanamide 4a-d (1.0 mmol) and HOBt (1.0 mmol, 0.135 g) at 0 C. After the reaction mixture was stirred for 5 min, EDC¡¤HCl (0.220 g, 1.1 mmol) was added. The pH value of the solution was adjusted to 8-9 with 4-methylmorpholine. The reaction mixture was stirred at 0 C for 2 h and overnight at room temperature. After evaporation of the mixture in vacuo, the residue was dissolved in ethyl acetate (50 mL). The solution was washed successively with saturated NaHCO3, 5% KHSO4, and saturated NaCl. The organic phase was separated and dried over anhydrous MgSO4. After filtration and evaporation in vacuo, residue was purified by recrystallization in petroleum ester/ethyl acetate to give the desired ceramide analogues 5xa-xj.

486-73-7 Isoquinoline-1-carboxylic acid 68092, aisoquinoline compound, is more and more widely used in various.

Reference£º
Article; Liu, Qianqian; Li, Xia; Bao, Yong-Sheng; Lu, Jingxin; Li, Hua; Huang, Zhizhen; Liu, Feiyan; Bioorganic and Medicinal Chemistry; vol. 27; 8; (2019); p. 1489 – 1496;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

27104-73-0, Methyl isoquinoline-3-carboxylate is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

EXAMPLE 71A Methyl 5-nitroisoquinoline-3-carboxylate Methyl isoquinoline-3-carboxylate (9.58 g, 51.2 mmol) in concentrated H2SO4 (100 mL) at 0 C. was treated with sodium nitrate (4.79 g, 56.4 mmol) in small portions such that the temperature was maintained below 5 C. Ten minutes after addition was complete, the reaction mixture was allowed to warm to room temperature and stirred for 2 hours. The mixture was poured over ice and adjusted to pH between 7 and 8 and filtered to afford the title compound as a bright yellow solid (11.44 g, 96%). MS (ESI+) m/z 233 (M+H)+; 1H NMR (DMSO, 300 MHz) delta 3.97 (s, 3H), 8.06 (t, J 8.2, 1H), 8.72 (dt, J 1.0, 8.2, 1H), 8.78 (dd, J 1.0, 7.8, 1H), 9.11 (s, 1H), 9.65 (s, 1H).

The synthetic route of 27104-73-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Lee, Chih-Hung; Bayburt, Erol K.; DiDomenico, Stanley; Drizin, Irene; Gomtsyan, Arthur R.; Koenig, John R.; Perner, Richard J.; Schmidt, Robert G.; Turner, Sean C.; Jinkerson, Tammie K.; Zheng, Guo Zhu; US2005/113576; (2005); A1;,
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Isoquinoline | C9H7N – PubChem

58794-09-5, 7-Bromoisoquinoline is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A cold solution of tert-butyl (1 -oxoisoquinolin-2(1 -/)-yl)acetate (1.2 g, 4.6mmol) in dichloromethane (20 mL) was treated with trifluoroacetic acid (10 mL) dropwise. The reaction mixture was then stirred at room temperature for 3h. The solvent was evaporated and the residue was azeotroped with toluene. The solid formed was triturated with ether to afford the title compound. 1 H NMR (400 MHz, DMSO-d6): delta 10.76 (s, 1 H), 8.18-8.20 (m, 1 H), 7.64-7.73 (m, 2H), 7.42- 7.52 (m, 2H), 6.62 (d, J= 8.0 Hz, 1 H), 4.67 (s, 2H). MS (ESI+): 204.3, HPLC (Method A) Rt 2.34 min; HPLC purity 99.3 %

As the paragraph descriping shows that 58794-09-5 is playing an increasingly important role.

Reference£º
Patent; ARES TRADING S.A.; SWINNEN, Dominique; MORANDI, Federica; WO2013/92979; (2013); A1;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.7651-81-2,Isoquinolin-3(2H)-one,as a common compound, the synthetic route is as follows.

Example 9; 3-Trifluoromethylsulfonate-isoquinoline; Triflic anhydride (2.03 g) was added dropwise to a stirred solution of 3-hydroxy-isoquinoline (950 mg) in pyridine (7.0 mL) at 0 C. After 10 minutes the icebath was removed and the reaction was stirred at room temperature for 16 hours. The solution was then diluted with water and extracted with CHCl3, the organic extracts were washed with brine and dried over Na2SO4. Evaporation of the solvents and purification over SiO2 (EtOAc:Hex, 1:1) yielded 1.70 g (94%) of product. Mp 33.3-33.9 C. 1H NMR (CDCl3): delta (ppm) 9.04 (s, 1H), 8.03 (d, J=8.3 Hz, 1H), 7.90-7.62 (m, 3H) 7.55 (s, 1H).

The synthetic route of 7651-81-2 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Smits, Rogier Adriaan; Lim, Herman Dirnawan; Leurs, Regorius; De Esch, Iwan Jozef Philomena; US2010/16293; (2010); A1;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem